Window bracket



Oct. 17, 1933. B, RAFTON 1,930,938

WINDOW BRACKET Filed Oct. 20, 1931 2 Sheets-Sheet 1 Oct. 17, 1933. G. B.GRAFTON 1,930,938

WINDOW BRACKET Filed Oct. 20, 1931 2 Sheets-Sheet 2 J2 J 7 1 6 Geor e BGr Z016,

Patented Oct. 17, 1933 UNITE fgs? PA'I'EN1"OFFICE;

1,930,938 wmnow BRACKET" Geo ge B. Grafton, Irwin, r i 1 ApplicationOctober 20, 1931.; s m No. 510,022

This inventionrelates to window brackets for the use of painters, windowwashers, and the like. An object of the invention is'the provision of awindow bracket adapted to be adjustably po- 8 sitioned in holdingengagement with a window frame and sill assembly, and having guard.means associated therewith which is collapsible upon the main body ofthe bracket to facilitate I transportation. Another object of theinvention is the provision in a bracket of this character of novel meansfor adjusting and holding the bracket in'adjusted position. Otherobjects include the provision of a windowbracket which is rugged,durable, and which fulfills all knownsafety requirements dealing withdevices of this general nature. i

In the drawings: i 1

Figure 1 is a perspective of a window bracket as constructed inaccordance with this invention.

collapsed position. v

Figure 3 is atop plan view of the bracket as mounted in service. I

Figure 4 is a section on the line 4- -4 of Figure 3.

Figure 6 is a section through the retaining bar assembly. 1

Broadly the invention consists of a platform slidably adjustable oversupporting bars or arms arranged thereunder and which have associatedtherewith. means for anchoring the arms with respect to a window frameso that the platform extends outwardly thereof over the window ledge.The platform carries a guard rail assem- 85 bly which is collapsiblethereon for transportation and the platform is further'provided withsuitable window ledge engaging rests having means thereonfor securingthe platform inad- V justed position with respect to its supportingbars.

In'detail the structure comprises a platform having a deck made up offlooring strips 10-Occupying its central portion between side edgeflooring strips 11 which are of greater width than the strips 10, all ofthe strips 10 and 11 being appropriately secured to cross sills 12, 13and 14'extending therebeneath adjacent the rear edge, the centralportion, and the front-edge respectively or the platform. I l

Each of the side edge deck strips 11 at its junction with the centralcross sill 13'has associated therewith a depending substantially U-shaped metal guide 15, the upstanding, side arms of which are bent toform perpendicular shoulders 16'adapted to seatagainst ametal bearingFigure 2 is a side elevation thereof as in guard Figure 5 is a sectionon the line -5--5 of Figure 3.

plate: 17 resting against the under face of the sill 1'3 .to avoidinjury to the sill by reason of wear. The perpendicular shoulders 16extend laterally on opposite sides of. the guide and terminate inupstandingparallel arms17, the outer of which bears against "the outerside of the associated strip 11 and cross sill 13 and the inner of whichextends upwardly through an aperture '18 provided for the purpose inthecross silland through aseating notch 19in the adjacent side 5 zplatel'l, sill 13, deck piece 11, and plate 20 serve to sec'ure theparts in assembled :service position.

Adjacent the rear edge of the platform the cross sill 12 has at eachside edge of the platform a guide 26 associated therewith and of a construction similar tothe previously detailed guide 15. The guide 26 isprovided with an upstanding side terminal portion 27cooperating withanear 28 on a securing plate 29 to receive the pivot stud 30 by which arear upright guide frame bar 31' is pivotally connected to the rear edgeof the platform. The plate '29 and the guide "26' are secured togetherby fastening elements, one of i cooperating with the upstanding terminalportion 35 of a guide arm 36 to receive the pivot stud 37 by which thelower forward end of a guide frame arm 38 is pivotally connected to theplatform. Beneath the sill 1 1 the arm 35 is, bent inwardly to provide aperpendicular shoulder 39 having a bearing engagement against'a plate 40on the'under side of the sill; Atits inner end the shoulder 39 iscontinued as a part I of the guide arm 36 which is formed with anoutwardly flared lower end portion 41 having an inwardly directed foot42 which is rounded'on its under face for seating engagement on a windowledge. Cooperating with the member 36 plate and which is anchoredthereto by a securing element 47 passed through the shoulder, plate,sill, side strip, and upper retaining plate 33. A similar securingelement 47 connects the plate 33 with the shoulder 39 of the guidemember 36.

A pivotbolt 48 extends through and'between the parallel portions 36 and43 of the forward guides and provides a fulcrum for a clamping lever 49pivotally mounted thereon between the arms 36 and 43. The lever 49' hasa cam head 50 and therespective guide arms may be clamped tightlyagainst the sides of the cam head 50 by proper adjustment of a nut 51threaded over the bolt stem 48. 1 I

The platform is slidably mounted over spaced supporting arms 52 ofchannel metal having their respective channel flanges inwardly andoppositely-directed. These channel arms 52 are slidably received throughthe guides 26, 15 and 36 43, and are provided at their forward ends witheyes 53 adapted to receive therethrough a rener bar 55 slidably disposedwithin the tube and adapted to bear at its ends 56 against the insideofa window frame 57 when in service position, as shown in Figure 3. Thetube 54- and retaining bar 55 are respectively anchored by means of aset screw 58 threaded through a floating ring 59 disposed over the tube54, which set screwis adapted to extend through an aperture 60 providedfor the purpose in the tube 54 and bear against the surface of the bar55.

As best shown in Figure 6, the respective diameters of bar 55, tube 5and ring'59 are such that there is a limited play between the'partsradially thereof. This materially assists the holdingaction of the setscrew 58 when the parts are clamped together. s

The platform carries a collapsible guard rail r or cage assemblyconsisting, in an extended position, of upright rear bars 31 connectedat their ends by anintegral cross piece 61 to which is attached anunderbrace 62 hearing against the side bar'f33 disposed a similar side bar 65having forwardly extended side arms 66 pivbar 24 and further protectionat the sides 'of the cage is provided bymeans of pivoted links 68connected between the upperfends] of the uprights 31 and the upper endsof the side bars 23.

At the upper end ofeac hof the side bars 23 there is pivotally connectedthe end of a brace 'bar 69 adapted to extend forwardly and downwardlyWith 'respect to the platform'and which has its lowerend pivotally'attached to the upper end of the associated bar 38 by means of a pivotstud 70. A slip sleeve 71 is adapted to slide over tliebrace arm 69 andto seat on the head ofthe studf/O to cover the'.break-- joint andmaintain the brace bar iii-service position, as shown in Figure 1.

Prior to use the bracket is collapsed into the position of parts asshown in Figure 2 so that With the device guide elements areseated onthe window ledge 72, the platform being slidable over the supportingchannel bars 52to effect the necessary adjustment of the parts toaccommodate for different sized Windows. With the parts thus adjustedthe clamping levers 49 are manipulated to engage their cam heads50'against the under channels of the bar 52 forcing the same intoclamped engagement against the under side of the platform and therebysecurely holding the platform in adjusted position with respect to thesupporting channel barsj52. The nuts 51 may then be tightened to clampthe guide sections 36 and 43 against opposite sides of the cams andchannel bars providing an additional measure of security and effectivelyholding the associated parts against any relative slipping movementthereb'etween. The cage is then extended to upright position by liftingup on the top cross bar 61 and the slip sleeves'll are engaged over thebreak-joints to hold: the V in,a window frame to extend outwardlytherefrom, leg members rigidly secured to said platform and adapted tobear against a window ledge, and means for clamping said leg membersbars.

2. A window bracket comprising a platform, a

guard cage carriedthereby, guide members consisting of metal strippieces rigidly; attached into holding engagement with said supporting,

to said platform and having portions shaped to 7 provide supporting legmembers at opposite sides of the platform, said cage having bracing barsconnected directly to said guide members, supporting bars longitudinallyslidable through said guide members, means for anchoring said bars in awindow frame to extend outwardlytherefrom, saidleg members being adaptedto bear against a window ledge, and clamping means same, said clampingmeans being-mounted upon and operable between the leg members.

, 3. In a window bracket, a platform, window ledge engageable legmembers carried thereby adjacent one edge and consistingof pairs ofsubstantially parallel metal'strips spaced apart, platform supportingbars slidably engageable between the spaced elements of said legmembers, means for anchoring said supporting bars in a window frame, andclamping elements pivotally mounted between the elements of saidlegvmembers for'engaging against the underfac'es of said supporting'barsto bind the same againstthe bottom of said platform.

1.13 *forflengaging saidsupporting bars beneath the cage carriedthereby, supporting bars beneath said platform and extending forwardlythereof, said bars having eyes formed therein at their forward ends, abar adapted to be disposed transversely through the eyes of thesupporting,

bars for engaging the inside of a, window frame, a sleeve disposedthrough said eyes and receivin'said first named sleeve.

having an aperture therein, and a clamping sleeve slidable over saidfirst named sleeve and ing said bar in 'eoncentric re1ation,;said sleevehaving a clamping boltfthreaded there through for engaging said barthrough the aperture GEORGE B. GRAF ON. I

